Plural jet hair drier



mm m, @935. c. s. GROSS PLURAL JET HAIR DRIER Filed June 13, 1930 2 Sheets-Sheet 1 (Lam. G-RosS INVENTOR WM- CA ATTORNEY W, 1935. c. G. GROSS 2,023,883

- PLURAL JET HAIR DRIER Filed June 15, 1950 2 SheetsrSheet 2 cnRL 6-. cfRoss INVENTOR ATTORNEY Patented Dec. 10, 1935 UNITED STATES PLURAL JET HAIR DRIER Carl G. Gross, Mount Vernon,

N. Y., assignor, by

mesne assignments, to American Machine and Metals Manufacturing Corporation, N. Y., a corporation of Delaware New York,

Application June 13, 1930, Serial No. 460,815

10 Claims.

This invention relates to improvements in hair driers of the airblast type and has for its object the provision of a hair drying means so constructed that air may be applied to any one or several desired portions of the head of the user.

In accordance with my invention I provide a conventional head enclosing hood with an inner wall or shell which is fastened to the hood so as to prevent undesired escape of air. Perforations or outlet openings are made in the inner wall so that air jets may escape therefrom onto the hair being dried. In addition valve means is provided for controlling the flow of air through said openings. The valve may comprise a second shell, similar in shape to the one first mentioned, and arranged to fit closely to the surface thereof. This second shell may be placed either inside or outside of the first mentioned shell and is also provided with air escape openings. By mounting the second shell for rotation with respect to the first, and providing it with a series of openings similar in position to those in the first shell, as well as with additional openings, it is possible to secure a large number of combinations of air escape openings merely by turning the second shell with respect to the first.

The shells and hood may be of any desired shape and size but I prefer that they be substantially hemispherical or be patterned after some other body or surface of revolution. By such shaping one shell may easily be adjusted with respect to the other by relative rotation. But differently shaped shells and hood might be used and the air controlling shell moved longitudinally of its axis or rocked if desirable, to control the air outlet openings.

The above mentioned and further objects and advantages of my invention, and the manner of attaining them, will be made clear in the following description and accompanying drawings.

In the drawings, Fig. 1 is a sectional view in side elevation of a hair drier embodying my invention.

Fig. 2 is a sectional View taken along line 2-2 of Fig. 1.

Fig. 3 is a diagrammatic view showing the location of outlet openings in one of the elements of the hood shown in Fig. 1.

Fig. 4 is a view similar to Fig. 3 showing the outlet in another of the elements of the hood. Figs. 5, 6, 7, 8, 9, 10, 11 and 12 show the diiferent combinations of outlet openings which may be had with the hood arrangement of Fig. 2.

Referring more particularly to the drawings,

reference numeral 1 indicates an outer hood or helmet having attached to one side thereof an inlet air duct or conduit 2 through which air may be introduced by any suitable blower means not shown. Mounted within the hood I is a first shell or wall 3 which is of substantially the same shape as the hood and is positioned coaxially and substantially concentrically therewith. As shown in Figs. 1 and 2 of the drawings, the hood and shell are substantially hemispherical in form and the shell has at its open end a rim 4 which fits tightly inside the edge of the hood and forms a substantially air-tight opening therewith. The upper end of both the hood and shell are provided with a flattened portion 5.

The hood and shell are fastened together at this point by any suitable means such as rivets 6.

Arranged within the first shell is a second shell 1 of the same general shape. This shell is made slightly smaller than the first shell so that it will turn freely with respect thereto. The hood has at its upper end a cylindrical portion 8 within which a similar cylindrical portion 9 of the first shell fits. In like manner the second shell has a cylindrical portion I!) which fits within that of the first shell and holds them both in proper alignment. The lower or open end of the second shell has an outwardly turned flange i l which serves as a guide therefor and likewise insures that no sharp edges be exposed. Fastened to the inside of the top of the second shell is a plate l2 which has joined thereto a shaft l3. This shaft projectsthrough openings in the hood and the first shell, and has secured to the outside thereof an operating knob l 4. Between the knob and the surface of the hood a spring washer I5 is positioned. The function of this washer is frictionally to hold the inner shell against undesired rotation. The knob I 4 may have fixed thereto an indicating means such as projection l6 which will serve to show the angular position of the inner shell. Likewise a scale or dial l'l may be fixed to the hood so as to cooperate with the indicator. As shown most clearly in Fig. 3 the first or fixed shell 3 has seven openings therein, four of them, l8, I9, and 2|, are arranged at 90 intervals around a circular path concentric with the axis of the shell. These four serve to blow air onto the top of the head. In addition there are three others, 22, 23 and 24, placed at 90 intervals along a circle of larger diameter also positioned concentrically with the axis of the shell. The two diametrically opposite openings, 22 and 24, serve to supply air to the vicinity of the ears of the user, while the third opening, 23,

at the bottom of Fig. 3, projects air on the neck of the user. Referring to Fig. 4, the second shell I is provided with openings of the same number and position as Fig. 3 and in addition has two extra openings 25 and 26 which are arranged on the same circular path of l8, I9, 20 and 2| and are positioned respectively between openings I8 and 2| and I8 and I9.

By virtue of this arrangement of openings or perforations it is possible by angular rotation of the second shell with respect to the first to obtain a large number of air jet combinations. For example, taking the arrangement shown in Fig. 5 as a first position it is shown that all of the perforations of Fig. 3 are open and thatair jets may be passed through them so that the head of the user is uniformly subjected to an air bath. Should it be desired to localize the application of air it is merely necessary to rotate the inner shell or valve, for example, in a right-handed direction 45 from the position shown in Fig. 5, air passes through only openings l8 and I9, all the others being closed. This is shown in Fig. 6. Figs. 7 to 12 show additional arrangements taken in 45 steps. The aligned openings are shown by a full circle; those in the .first shell by a dotted line and those in the second shell, which are closed, by lined circles. by the provision of seven openings in the fixed member and nine openings in the second member, twelve different combinations of jets may be obtained by a simple adjustment. Of course, the inner shell or valve may be moved a portion of a full step of 45 in which case partial sized openings will be obtained.

It will be understood that while I have shown my valve arrangement in connection with a hood type drier it may also be used with any conventional drier wherein an air blast of relatively large area is projected on the head of the user. With such driers the hemispherical shells which I have shown in my drawings may be replaced by fiat discs which would in like manner serve to control the fiow of air. This valve arrangement may likewise be used where it is merely desired to control the volume of flow of air or other fluid and not necessarily the location of a plurality of jets. Where this is the object the discs need not be large .at all butrmay be made of any size suitable to pass the volume of air or other fluid desired.

I have described a particular embodiment of my invention merely for the purpose of illustration' and it should be understood that various modifications and adaptations thereof may be made within the spirit of the invention as defined in'the following claims.

What I claim is? 1. A hair drier comprising an outer hood and two inner shells all substantially concentrically mounted, said shells being perforated and one of them movable with respect to the other.

2. A device in accordance with claim 1 wherein the two shells have certain identically located perforations and certain diiferentlylocated perforations. V

3. A device in accordance with claim 1 wherein the movable shell is mounted for rotation with respect to the other shell, and means is provided for adjusting the angular position of said movable shell.

4. A device in accordance with claim 1 wherein the hood and shell adjacent thereto are made substantially air-tight and means is provided for It will thus be seen that introducing to the enclosed space, air under pressure.

5. In a hair drier, a hood for surrounding the head of the user, said hood having an outer wall and an inner wall spaced therefrom, means for 5 supplying air under pressure between said walls, said inner wall having a plurality of spaced openings therein, and valve means located adjacent said openings and cooperating therewith to control the flow of air through said openings; said 10 inner wall being substantially hemispherical in shape and said valve means comprising a similarly shaped wall member or shell fitting closely to the exposed side of said inner wall.

6. In a hair drier, an open-sided hood adapted 15 to enclose the crown of the head and the nape of the neck of the user, an inner shell for said hood, said shell being of slightly smaller size than said hood and having its open side joined to that of said hood, said shell having a plurality of out- 20 let openings therein which are so arranged as to permit air to escape from the space between the hood and the shell, a second shell located within the first shell and also having a plurality of outlet openings to direct the air onto the users neck, 25 ears and the top of the head respectively, and conduit means for supplying air under pressure to said space. a

7. In a hair drier, an open-sided hood adapted to enclose the crown of the head and the nape of 3 the'neck of the user, an inner shell for said hood,

said shell being of a slightly smaller size than said hood and having its open side joined to that of said hood, said shell having a plurality of outlet openings therein which are so arranged as 35 to permit air to escape from the space between the hood and the shell, a second shell located within the first shell and also having a plurality of outlet openings to direct the air onto the users neck, ears and the top of the head respectively, 40 and conduit means for supplying air under pressure to said space; said shells being relatively movable to vary the relative positions of their respective openings to control the escape of air through said shells. 45 8.. In a hair drier, an open-sided hood adapted to enclose the crown of the head and the nape of the neck of the user, an inner shell for said hood, said shell being of a slightly smaller size than saidhood and having its open side joined to that of said hood, said shell having a plurality of outlet openings therein which are so arranged as to permit air to escape from the space between the hood and the shell, a second shell located within the first shell and also having a plurality 55 of outlet openings to direct the air onto the users neck, ears and the top of the head respectively, and conduit means for supplying air under pressure to said space; said second shell being rotatably mounted in close relation to the first mentioned shell and being provided with like openings and also with a plurality of differently spaced openings adapted to come into alignment with certain of the openings in the first mentioned shell upon rotation of said second shell. 55 9. In a hair dryer, in combination, a hood adapted'to embrace a portion of a human head, means of supplying air under pressure to the hood, two relatively movable dome shaped nested members each having spaced openings controlling the air flow to the head, the spaced openings of the two members so aligned that relative rotation of the dome shaped members permits selective application of air to different parts of the head. 75

10. In a hair drier, an open-sided hood adapted to enclose a part of the head of the user, an inner shell for said hood, said inner shell being of smaller size than said hood and having its open side connected to the open side of said hood, said shell having a plurality of openings therein which are so arranged as to permit air to escape from the space between the hood and the shell, a second shell located within said first shell and also having a plurality of openings to direct the air onto the head of the user and means for supplying air under pressure to said space be- 5 tween the hood and said inner shell.

CARL G. GROSS. 

